Qualls spent 2012 with the Pirates, throwing 52 1/3 innings in 60 games while posting a 2-1 record with a 5.33 ERA. Qualls broke in with the Astros in 2004, and he's also pitched for the D-backs, Rays, Padres, Phillies and Yankees.
Recently, Miami also signed relievers Michael Wuertz and Mitch Talbot to Minor League deals with invitations to Spring Training.
Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter @JoeFrisaro This story was not subject to the approval of Major League Baseball or its clubs.